package demo1;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 张宇田
 * Date: 2025-08-16
 * Time: 9:55
 */
public class test1 {
    public static void main(String[] args) {
        //装箱
        int i = 1;
        Integer b = i;
        System.out.println(i);
        System.out.println(b);

        //拆箱
        Integer c = 9;
        int y = c;

        Integer aa = 100;
        Integer bb = 100;
        System.out.println(aa == bb);

        Integer cc = 200;
        Integer dd = 200;
        System.out.println(cc== dd);
    }
}
